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| author | Yu Kuai <yukuai3@huawei.com> | 2020-11-10 04:14:43 +0300 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2020-11-10 11:14:25 +0300 |
| commit | 48f486e13ffdb49fbb9b38c21d0e108ed60ab1a2 (patch) | |
| tree | 9285c37baf8ff94289d9bc686b225c452a81c01f /net/xfrm | |
| parent | bc0230b6461c3c9105f94ff27394eafc632803e4 (diff) | |
| download | linux-48f486e13ffdb49fbb9b38c21d0e108ed60ab1a2.tar.xz | |
net: xfrm: fix memory leak in xfrm_user_policy()
if xfrm_get_translator() failed, xfrm_user_policy() return without
freeing 'data', which is allocated in memdup_sockptr().
Fixes: 96392ee5a13b ("xfrm/compat: Translate 32-bit user_policy from sockptr")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm')
| -rw-r--r-- | net/xfrm/xfrm_state.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index a77da7aae6fe..2f1517827995 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -2382,8 +2382,10 @@ int xfrm_user_policy(struct sock *sk, int optname, sockptr_t optval, int optlen) if (in_compat_syscall()) { struct xfrm_translator *xtr = xfrm_get_translator(); - if (!xtr) + if (!xtr) { + kfree(data); return -EOPNOTSUPP; + } err = xtr->xlate_user_policy_sockptr(&data, optlen); xfrm_put_translator(xtr); |